<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <link rel="stylesheet" href="../bootstrap/css/bootstrap.css">
<style>
i.glyphicon-menu-right{
    color: red;
}
</style>
</head>
<body>
    <a href="" class="btn btn-default">你好</a>
    <a href="" class="btn btn-primary">你好</a>
    <a href="" class="btn btn-success">你好</a>
    <a href="" class="btn btn-info">你好</a>
    <a href="" class="btn btn-warning">你好</a>
    <a href="" class="btn btn-danger">你好</a>
    <a href="" class="btn btn-link">你好</a>
    <i class="glyphicon glyphicon-random"></i>
    <i class="glyphicon glyphicon-menu-right"></i>
    <div class="dropdown">
            <button class="btn btn-default dropdown-toggle" type="button" id="dropdownMenu1" data-toggle="dropdown" aria-haspopup="true" aria-expanded="true">
              Dropdown
              <span class="caret"></span>
            </button>
            <ul class="dropdown-menu" aria-labelledby="dropdownMenu1">
              <li><a href="#">Action</a></li>
              <li><a href="#">Another action</a></li>
              <li><a href="#">Something else here</a></li>
              <li role="separator" class="divider"></li>
              <li><a href="#">Separated link</a></li>
            </ul>
    </div>
    <script src="https://cdn.jsdelivr.net/npm/jquery@1.12.4/dist/jquery.min.js" integrity="sha384-nvAa0+6Qg9clwYCGGPpDQLVpLNn0fRaROjHqs13t4Ggj3Ez50XnGQqc/r8MhnRDZ" crossorigin="anonymous"></script>
    <script src="bootstrap/js/bootstrap.js"></script>
</body>
</html>